The savings and loan debacle of the 1980s is still yielding some big  criminal convictions - there was another last month - but investigations   and trials involving individuals from the decade of greed are winding down   at last.     
In December, prosecutors in Miami successfully lowered the boom on one  of the most extravagant figures in the thrift industry - David L. Paul, the   former chairman of Centrust Bank.   
  
Mr. Paul, who was convicted of multiple fraud and racketeering charges  in connection with one of the largest banking collapses in history, began   his 11-year prison sentence last week   
"This was south Florida's most notorious white collar criminal," said  Cheryl Bell, the financial crimes coordinator in the Miami U.S. attorney's   office. "It's safe to say that there is no greater S&L crook on the East   Coast than Paul. You have Keating (Charles H. Keating, former president of   Lincoln Savings and Loan) on the West Coast and Paul on the East."       
  
Mr. Paul's 11-year prison sentence and $65 million in restitution are  slightly less than the punishment Mr. Keating received: 12 years in prison   and $122 million in fines. These sentences are among the stiffest for   crimes related to failed S&Ls. The top honor goes to Thomas Billman, a   Maryland banker who began a 40-year sentence last June.       
The news for those pursuing cases against alleged S&L crooks was not all  good last month. Another big case involving a figure from that period,   Thomas Spiegel of the failed Columbia Savings and Loan in California,   resulted in an acquittal.     
While Mr. Spiegel was found innocent of charges that he looted the  Beverly Hills-based thrift that failed in 1991 and eventually cost   taxpayers $1.2 billion, he still faces civil charges filed by the Office of   Thrift Supervision. The OTS seeks to ban him from banking and collect $40   million to $50 million in restitution.       
  
A hearing in that case will begin Feb. 27.
How much longer will S&L trials continue? The statute of limitations for  criminal trials involving failed thrifts was extended in 1989 to 10 years,   from five, so 1999 should see the end of many of these trials. But federal   and state prosecutors point out that some crimes from that period are still   just coming to light.       
"Bank fraud is not something that just happens in one day," said Dwight  P. Bostwick, deputy special counsel for financial institutions fraud at the   Department of Justice. "It comes from a long series of actions that   eventually go over the line. So it's hard to make a clean break as far as   what cases we're dealing with came from the late 1980s. But I'd guess that   about 20% of our cases now came from that period."         
That figure translates into about 1,900 pending fraud cases as of June  of 1994, according to the department's quarterly report to Congress. The   report states that a total of 9,461 fraud cases are pending.   
  
And the Justice Department has been largely successful with these cases  to date. Despite the perception that many of the S&L crooks have escaped   unpunished, federal prosecutors have convicted more than 95% of the   defendants they have charged, according to the congressional report.     
It The department has brought successful bank fraud trials against 4,734  individuals since 1989. The peak year for convictions was 1992, with 1,185.   The figure for the first six months of 1994 was 679.   
As for the Resolution Trust Corp., one of the agencies that handles  civil cases, it still has 283 lawsuits against S&L individuals pending as   of Nov. 30. These must be completed within the next 12 months because the   RTC will be disbanded by yearend.     
"The overall story is that we've recovered almost $1.2 billion, said  Thomas L. Hindes, associate general counsel for the professional   liabilities section of the RTC. "Expenses have been under $335 million.   That's a positive ratio for this type of resolution."     
Some observers believe there haven't been more trials simply because in  many instances, as prosecutors acknowledge, there is no money left to   recover.   
"If the individual doesn't have any assets, there's no point in going  forward with a lawsuit," said Paul M. Horvitz, professor of banking and   finance at the University of Houston. "I wouldn't criticize them (federal   prosecutors) for that. If there's nothing to go after, there's nothing to   go after."       
Mr. Horvitz can personally testify to the fact that prosecuting S&L  crooks is a long-term business. He is currently serving as an expert   witness in an S&L trial involving charges from 1985.